Wanzhao Chemical developed a unique process to prepare a series of high-quality asphalt emulsifiers, which can effectively emulsify petroleum road asphalt, SBS modified asphalt, etc. The produced emulsified asphalt is often used in road construction and waterproof coatings. When used together with Wanzhao series stabilizers, it can solve the industrial difficulties of cationic emulsified asphalt, such as short storage period, difficult precipitation and long-distance transportation, poor compatibility of anionic emulsified asphalt, poor hard water resistance and water separation, which provides greater possibilities for the future development of road construction and waterproof coatings.